Chapter 2 Wiring And Protection

Question 1

A 240 volt boat hoist receptacle has to be?

Answer 1

GFCI protected

Question 2

Non-dwelling unit receptacles installed in/on the_____ shall be gfci protected.

Answer 2

Roof tops, outdoors, and sinks

Question 3

What is the minimum rating for a laundry circuit in a single family dwelling?

Answer 3

20 amps and 1,500 watts

Question 4

A receptacle on a individual branch circuit can be rated for what percent?

Answer 4

100%

Question 5

What size branch circuit shall apply only non-lighting loads?

Answer 5

50 amps

Question 6

What type of [lamp holder] shall be connected to a load in excess of [20 amps?]

Answer 6

Heavy duty

Question 7

The laundry outlet shall be installed within how many feet of the designated location?

Answer 7

6 feet

Question 8

Receptacle outlet in the floor shall not be counted as part of the required number of wall receptacles unless located within how many inches of the wall?

Answer 8

18 inches

Question 9

What is the minimum number of small appliances for a single family dwelling?

Answer 9

2 circuits

Question 10

Other than counter top appliances, what type of device is allowed to utilize the small appliance circuit in a single family dwelling?

Answer 10

Refrigerator, clocks, and cooking equipment

Question 11

Receptacles shall be installed so that no point along the wall line of a kitchen countertop is no more than ____ inches measured horizontally from a receptacle in that space?

Answer 11

24 inches

Question 12

What is the minimum length of countertop in a kitchen that required the installation of a receptacle?

Answer 12

12 inches

Question 13

Island counter tops, with a minimum dimension of 12”W x 24”D, must have at least ____ receptacle outlet.

Answer 13

1

Question 14

18 feet of show window requires how many receptacles above window?

Answer 14

2

Question 15

What is the maximum distance from a roof unit that the rooftop gfci service receptacle shall be located?

Answer 15

25 feet

Question 16

A conference room is 250 sq ft and has a 12.5 ft wall. How many floor receptacles are needed?

Answer 16

1

Question 17

Does a vehicle garage door require illumination under the illuminated entryway rule?

Answer 17

No

Question 18

General branch circuit lighting load for a hospital shall be calculated at ___ watts per sq feet?

Answer 18

2

Question 19

In dwelling units, new additions to the lighting branch circuit shall be calculated in accordance with 220.12 when over ____ square feet.

Answer 19

500

Question 20

Where SE cable enters the building, the conduit has to be?

Answer 20

Sealed

Question 21

The conductors for festoon lighting shall be supported by messenger wire in all spans exceeding?

Answer 21

40 ft

Question 22

What is the minimum service rating for a single family dwelling with 6 or more 2 wire branch circuits?

Answer 22

100 amps

Question 23

Circuit breakers used as switches in 120V flourecent lighting shall be marked as?

Answer 23

SWD & HID

Question 24

What is the minimum height of a SE conductor rated 600 volts going above a pedestrian sidewalk?

Answer 24

15 feet

Question 25

The minimum number of disconnects at the main service?

Answer 25

6

Question 26

What is the minimum service disconnect of a commercial building?

Answer 26

60 amps

Question 27

Serve as overcurrent protection, I’ll just connecting me and Shelby supplied on the line side of all fused circuits that exceed 150 V if the fuses are accessible to who?

Answer 27

Other than qualified personnel

Question 28

Edison based fuses shall not operate at over then?

Answer 28

30 amps

Question 29

A type S fuse installed in an edison base fuse holder for what primary reason?

Answer 29

Non-interchangeable

Question 30

Conductor may be spliced together by____?

Answer 30

Exothermic welding

Question 31

What size grounded conductor you can run in parallel?

Answer 31

1/0

Question 32

Main panel enclosure serves as what?

Answer 32

Main bonding jumper

Question 33

High impedance ground systems operate at a minimum of what voltage?

Answer 33

480 volts

Question 34

A concrete encased electrode with electrically, conductive coated, steel, reinforcing bar shall be at least ______in diameter, and a minimum of 20 feet and continuous length?

Answer 34

1/2”

Question 35

Minimum size wire for ground ring?

Answer 35

#2 copper

Question 36

How many feet of a rod electrode, be in contact with the Earth?

Answer 36

8 feet

Question 37

A ground rod shall be at least how many inches in diameter?

Answer 37

5/8”

Question 38

Minimum space between ground rods?

Answer 38

6 feet

Question 39

What size grounding electrode conductor must always be protected from physical damage?

Answer 39

#6 or bigger

Question 40

When a metal enclosure is required to protect the grounding electrode conductor, the enclosure has to be bonded to what at both ends?

Answer 40

Grounding electrode conductor

Question 41

What is the minimum Size main bonding jumper for 800 kcmil service entrance conductor?

Answer 41

2/0

Question 42

What is the minimum Size copper clad grounding, electrode, conductor, needed for 200 amp single phase dwelling, copper feeder?

Answer 42

2 awg 200 x 83% 166 amps